The NKP-DY-IIIU series defends a wave to flow out a power supply allotment machine, can prevent from responding thunder and lightning shot, wave to flow out harass of electric voltage, for provide the best safety protection with the electricity equipments. That series defends a wave to flow out a power supply allotment the importation of the machine to connect line and output electric outlet form's etc. all can choose a combination; Adopt the 1 U machine box structure, the sign up to standard machine cabinet installs size, and can adapt bigger work electric current, is an equipments power supplies, such as electric power and correspondence...etc.